Loom-pulley hub



A. P. GREEK.

LOOM PULL APPLICAHON FILED DEC. Z9

LILLLL l5 replacements vmust be Patented Novo 2li @922 u ein@ it @ply 130031 -IULLEY HUB.

Application iled December 29, 1921. Serial No. 525,625.

To all whom t may coince/1%.'

p Be it known that l, IAnon P. Gianna, a citizen of the United States, and resident of Greenville, in the county of Greenville and State of South Carolina, have invented certain new and useful Improvements in Loom- Pulle Hubs, of which the following is a speci cation. rThis invention relates to pulleys especially lo adapted if i; use on looms. 1

ln the 'operation of looms 'the periddical strains borl e by the main-crank shaft serve to loosen'fthe connection between the drive pulley and the crank shaft so that frequent made. Therefore, an important objectof this invention ishto provide noveie means to compensata-i ior this rapid wearlon the crank shaft and the drive pulley so t at the necessity of frequently re- \placing th various parts associated with the crank shaft is overcome.

Further the invention aimsito provide a drive pulley for looms which may be -con' veniently applied and conveniently adjusted as re uired.

Ot er objects and advantages of the invention will be apparent during the course of the following description.

n the accompanying drawing forming. a part' of this application and in which like numerals are employed to designate like 'parts throughout the same.

Figure 'l is a fragmentary side elevation of the crank shaft equipped with the drive pulley and other associated parts.

Figure 2 is a vertical transverse Asectional view taken on line2-2 of Figure 1.

Figure' 3 is a perspective of a hub embodied in the invention.

In the drawing wherein for the purpose of illustration is shown a preferred embodi-y ment of the invention, the numeral 5 designates the usual crankshaft of a loom, the said crank shaft being provided with cranks 6 to which the pitman rods are connected in the usual and Well known manner.

As illustrated in Figure l the drive pulley 1G is mounted on the crank shaft at one side of the loose pulley 1T and the drive pulley is provided with the usual rim l2 about which the drive belt is trained. The loose pulley 1i is also provided with a rim 13 of the saine diameter as the rim v12 and onto which the i pulley is `forced when it is desired to stop shaft so that the Wear of the parts may ce compensated for as the occasion resuires, 6&5 ln carrying out the invention l provide a hub 20 which is split longitudinally and is mounted on the shaft. .The split hub is pro vided with aradially split annular attach-I ing Hangs 2l adapted to be secured liatiy le and securely in engagement with the inner edge portion of the annular web of the drive pulley, Fastening devices in the nature of bolts 252 are extended through openings 23 in the web of the Apulley and are extended 'i5 through openings 24 in the iange 21, lith reference to Figure 3 it will be observed that the openings 24: through which the bolts are extended are somewhat. elongated so that the adjustment of the hub will not be interfered Se with by the flange. That is to say by mak'- ing the openings 24 of a size to freely receive the bolts 22 the flange 2l may nieve with relaion to the bolts when the hub 20 is tightene One side orp the hub is provided with a reduced portion 28 extended through a centrally arranged opening in the web l0 and the said hub is further reduced as indicated at E29 and is extended through the central il@ portion of the head gear 80. The head gear 30 operates Athe cam employed in connection l with the harness of the loom and functions in the old and "well known manner. it wiii be seen that the bolts 22 are also extended through. the head gear 3G whereby 'to secure thehead gear flatly in engagement with the .adjacent side of the drive pulley. The bolts 2Q thereioreserve las a means for connecting the hub 20, the drive pulley .10 and the headit@ gear 30 so that these parts operate as a unit. The split hub 20 is provided with iiat radially projecting ears having apertures 34 for the reception of an adjusting bolt 35.

With reference to Figure 2 it wili be seen los that one 'of the apertures 35i is screw threaded for engagement with. the screw threads of the bolt 35. This forms a convenient ineensl against a key 42 and thereby holds theliey within the longitudinally extending ke Way 43 in the shaft and the longitudinal y extending key way 45 in the hub. Howeverthe set screw 41 is not tightened until after the hub has been securely clamped to the I shaft by means of the fastening bolt 35.

When it is desired to take up the Wear on y the crankshaft the loose pulley 11 may be removed and access affordedjto the bolt 35 and the set screw 4l. The loose pulley 11 vwhich is mounted on a bushing 5() may be conveniently removed. by releasing the set screw 51 carried by the extended end'of the bushing. The hub 2O which extends into the pulley and is surrounded by the rim 12 may now be tightened so asto efectivelyk take up the wear on `the shaft and the hub, which wear is as previously stated caused by the uneven pull and the excessive strains imparted to the'crank shait at various-periods in the operation of the loom. n

lt -will he seen that the improved hub by reason of its location entirely Within the pulley does not necessitate the rearrangement of the head Igear or other parts ymounted on the crank shaft. Also th'e particular location otl the hub rendeis the same highly accessible -when it is desired to make an adjustvso ment;` 4

Should the inventive idea'involved in-this application be carried out in connection with drive pulleys of the style now in use, it' is merely necessary to cnt away the hub of the drive pulley and substitute the hub herein disclosed.

With reference to Figure l, and also Figure 3, it will be seen that the ears 33 and 'adjustingv screw l1 are located entirely at one side ot' the flange 40 so that the head gear 30 willjnot interfere with the clamping of the hub on the shaft.

lt will be'noted that the improved hub may be secured on the worn part of an old shat't, which old part is located atia point spaced from one end ot the shaft. ln the use of the ordinary pulley the same must be made more or less oversized so as to tit over the end of the shaft which is not Worn and when it is desired to secure the 'pulley on the Worn part of the shaft a close-fit can not be obtained. i

Having thus described the invention what claim as new and desire to secure by Let ters Patent is:

LA In a loom, the combination of a split hub'- having a pair of radially projecting ears, an adjusting bolt freely passed through one of the ears and threaded through t e other ear whereby to form a means whereby the hub may be tightly clamped about the crank shaft of the loom, a jam nut ,threaded on said adjusting bolt and formin a means for holding the bolt in position, t e side of said hub opposite said ears being formed with a longitudinally extending radially ar.-y ranged projection provided With a threaded opening, a set screw threaded through said last named opening andconstituting a means for forcing a key 'in position, said hub being provided at one end of said projection with a split annular flange having elongated openlings, 'a drive pulleyhavin a Web'flatly. en-

gaged with one side of sai flange, fastening bolts extending through the web ot'said pulley and through the elongated openings int said flange whereb to detacliably connect the pulley to the ange, said pulley being provided with' a rim surrounding said hub,`

one end of said hub being formed With a reduced portion adapted for engagement with cooperating with said adjusting device in se curing the hub on a'loom. l

3. n a loom, the combination-Witha vsplit `hubhaviii radial ears provided with open* ings, an a justing device extending` through said openings, said hub being provided with an. annular flange split radially,A a pulley having a Web'secur'ed fiatly in contact with said flange, and means cooperating With'said adjusting device in .securing the hub on the shaft of the loom.

4f.' ln a loom, the 4combination of `a split hub havin a pair of radially projecting ears, an Vadjusting bolt freely passed through one of the ears and threade through the other ear to form a means whereby thehub may be tightly 4clamped about the crank 'shaft of a loom', theside of said hub opposite said ears beingnformed with a longitu- .dinally extending radially projecting meinber provided with a threaded opening, e set screw threaded through said last named opening,'a key extended through Asaid hub andengaged by said set screw, said hub be'- ing provided with a split annular flange,

and a drive pulley having a Web secured fiatly in engagement with said Harige.

Anon r. enligne, f 

